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UNI ISO 3951-1 : 2014

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

SAMPLING PROCEDURES FOR INSPECTION BY VARIABLES - PART 1: SPECIFICATION FOR SINGLE SAMPLING PLANS INDEXED BY ACCEPTANCE QUALITY LIMIT (AQL) FOR LOT-BY-LOT INSPECTION FOR A SINGLE QUALITY CHARACTERISTIC AND A SINGLE AQL
Superseded date

11-23-2022

Published date

11-06-2014

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Acceptance quality limit (AQL)
6 Switching rules for normal, tightened, and
   reduced inspection
7 Relation to ISO 2859-1
8 Consumer protection
9 Allowing for measurement uncertainty
10 Planning
11 Choice between variables and attributes
12 Choice between the s-method and sigma-method
13 Choice of inspection level and AQL
14 Choice of sampling scheme
15 Preliminary operations
16 Standard procedures for the s-method
17 Standard procedures for the sigma-method
18 Procedure during continuing inspection
19 Normality and outliers
20 Records
21 Operation of switching rules
22 Discontinuation and resumption of inspection
23 Switching between the s-method and sigma-method
24 Charts B to R - Operating characteristic curves
   and tabulated values for single sampling plans,
   normal inspection: s-method
25 Charts s-D to s-R - Acceptance curves for combined
   control of double specification limits: s-method
Annex A (normative) - Table for determining the sample
        size code letter
Annex B (normative) - Form k for single sampling plans:
        s-method
Annex C (normative) - Form k for single sampling plans:
        sigma-method
Annex D (normative) - Values of f[s] for maximum sample
        standard deviation (MSSD)
Annex E (normative) - Values of f[sigma] for maximum
        process standard deviation (MPSD)
Annex F (normative) - Estimating the process fraction
        nonconforming for sample size 3: s-method
Annex G (normative) - Single sampling plans of Form p*
Annex H (normative) - Values of c[U] for upper control limit
        on the sample standard deviation
Annex I (normative) - Supplementary acceptability constants
        for qualifying towards reduced inspection
Annex J (normative) - Procedures for obtaining s and sigma
Annex K (informative) - Consumer's risk qualities
Annex L (informative) - Producer's risks
Annex M (informative) - Operating characteristics for the
        sigma-method
Annex N (informative) - Estimating the process fraction
        nonconforming for sample sizes 3 and 4: s-method
Annex O (normative) - Accommodating measurement variability
Bibliography

This part of ISO 3951 specifies an acceptance sampling system of single sampling plans for inspection by variables.

Committee
U27.00
DocumentType
Standard
PublisherName
Ente Nazionale Italiano di Unificazione (UNI)
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
ISO 3951-1:2013 Identical

ISO 2854:1976 Statistical interpretation of data — Techniques of estimation and tests relating to means and variances
ISO 16269-4:2010 Statistical interpretation of data Part 4: Detection and treatment of outliers
ISO 7870:1993 Control charts General guide and introduction
ISO 31-11:1992 Quantities and units Part 11: Mathematical signs and symbols for use in the physical sciences and technology
ISO 10576-1:2003 Statistical methods — Guidelines for the evaluation of conformity with specified requirements — Part 1: General principles
ISO 2859-2:1985 Sampling procedures for inspection by attributes — Part 2: Sampling plans indexed by limiting quality (LQ) for isolated lot inspection
ISO 2859-0:1995 Sampling procedures for inspection by attributes — Part 0: Introduction to the ISO 2859 attribute sampling system
ISO 3534-2:2006 Statistics Vocabulary and symbols Part 2: Applied statistics
ISO 5725-2:1994 Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
ISO 5479:1997 Statistical interpretation of data — Tests for departure from the normal distribution
ISO 3951-2:2013 Sampling procedures for inspection by variables — Part 2: General specification for single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection of independent quality characteristics
ISO 3534-1:2006 Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in probability

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